An AD (analog-digital) converter, a signal conditioning circuit and an environment noisesensor can also be arranged so as to monitor directly.
还可设置AD转换器、信号调理电 路和环境噪声传感器，以便直接监测。
2
Attempt has been made to replace the manual judgement with light sensor and noisesensor is feasible. The results is proved possible on a certain condition.
尝试采用光敏传感器和声感传感器代替人员判断，对其可行性进行研究，结果表明在一定的条件下是可行的。
3
A sensor in the Jawbone unit picks up vibrations in the cheeks, while tiny microphones sort out background noise and cancel it.